I notice you reference ArcheAge skill system.
What you should do, if you can stomach it, is play Ultima Online. If you don’t like the half-dead official servers, find a nicenfreeshard that stays true to the official seam.
After that, after you get a good grasp of what skills there look like,cwatch the interactions.
After that, take a good look at PvP and class viability.
After that, figure out why it just doesn’t work anymore.
And then maybe re-examine your current understanding,yes?